With their Modular Space Vehicle (MSV) and Rapid Response Spaceworks (RRSW) awards, the Operationally Responsive Space Office has clearly transitioned from their concept design and socialization phase to the development and implementation phase. The MSV and RRSW contracts, along with the Tier-2 Enabler (T2E) mission they will enable, are now ORS’s top priority. With a clear directive from Congressional and military leadership, ORS will use the T2E mission to exercise their basic philosophy, to develop through contextual application, rather than studies or simulation. Central to the T2E mission will be a calculated gamble that the widely accepted Modular Open-System Approach (MOSA) is the right tool to change the paradigm of space and provide the DoD, as well as their civil, commercial, and international partners, a modular, scalable, and rapidly configurable architecture that can be employed to provide assured space power to the warfighter